Is KI ionic covalent or metallic?

Answer 1

KI ( potassium iodide) is an ionically bonded molecule.

The metal potassium (K) ; kalium) ionises to form the potassium cation K^(+)

The iodine atom has electron affinity to accept one electron into its outer energy shell to complete its octet, to form the iodide anion I^(-) .Since both these ions have a charge of '1' , but of opposite charge, they are attracted like the north and south poles of a magnet., to form the molecule potassium iodide (KI).

Covalency and metallic bonding do not come into consideration.

Hence

K = K^(+) + e^(-)

e^(-) + I = I^(-)

'Adding'

K + I = K^(+) + I^(-) = K^(+)I^(-). shortened to KI

Answer 2

Potassium iodide (KI) is an ionic compound. It is formed between a metal, potassium, and a nonmetal, iodine, resulting in the transfer of electrons from potassium to iodine, leading to the formation of ions that are held together by electrostatic forces.